/**
 *    Copyright 2009-2018 the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package com.yinsin.jpabatis.type;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.SQLXML;

/**
 * Convert <code>String</code> to/from <code>SQLXML</code>.
 * 
 * @since 3.5.0
 * @author Iwao AVE!
 */
public class SqlxmlTypeHandler extends BaseTypeHandler<String> {

	@Override
	public void setNonNullParameter(PreparedStatement ps, int i, String parameter, JdbcType jdbcType) throws SQLException {
		SQLXML sqlxml = ps.getConnection().createSQLXML();
		try {
			sqlxml.setString(parameter);
			ps.setSQLXML(i, sqlxml);
		} finally {
			sqlxml.free();
		}
	}

	@Override
	public String getNullableResult(ResultSet rs, String columnName) throws SQLException {
		return sqlxmlToString(rs.getSQLXML(columnName));
	}

	@Override
	public String getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
		return sqlxmlToString(rs.getSQLXML(columnIndex));
	}

	@Override
	public String getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
		return sqlxmlToString(cs.getSQLXML(columnIndex));
	}

	protected String sqlxmlToString(SQLXML sqlxml) throws SQLException {
		if (sqlxml == null) {
			return null;
		}
		try {
			return sqlxml.getString();
		} finally {
			sqlxml.free();
		}
	}

}
